Does eating werefoo corpses give lycantropy

It is traditionally safe to #loot items from containers in a store. It's also free to pick their locks if you have a lockpick or similar such. Looking at the contents of the container is perfectly free. If you do successfully take an item out, then you can put it back in the store like any other item; it does not need to go back in the container. There are only two caveats to watch out for.

1. A bag of tricks doesn't actually carry stuff, and #looting will cause you to get bitten for a minor amount of damage. This auto-identifies the bag, though, and does not cost any extra gold. So it's actually a pretty good thing to have done.
2. A cursed bag of holding has a 1/13 chance of the item you try and take out vanishing. Which means that you won't be able to put it back in the store. This is fairly rare, though, as from my experience most bags of holding in stores are empty.

Telepathy is a property that allows you to detect thinking creatures. Unlike most properties, there is actually a difference between when you have intrinsic telepathy (always active as a property such as by eating the right kind of corpse) and extrinsic telepathy (active from wearing a piece of equipment, like an amulet of ESP or helm of telepathy).

Intrinsic telepathy allows you to see every thinking creature on the current level if you are blind. You'll be able to see their locations and examine them just as if they were in your normal field of vision. Many people carry a blindfold to blind themselves when needed just for telepathy. One very common strategy is to blind yourself every time you enter a new dungeon level, in order to get a sneak peak at what is waiting to kill you.

Extrinsic telepathy gives you the same benefits as intrinsic, but also gives you vision of thinking creatures that are within 5 or so spaces from you, even when you aren't blind. Because it is superior, extrinsic telepathy will supercede intrinsic telepathy if you have it.

The monsters you can't see are creatures that lack minds. Put some thought into it if you'd like, but I've included a list for convenience here.

This includes jellies, puddings, fungi, lesser undead like zombies and mummies, golems, lights, vortices, and elementals.

As a warning, telepathy also gives you increased vulnerability to the mind blast attack of a mind flayer. Noted by a message of it locking into your telepathy, it can use this ranged damage attack at a much greater range if you have telepathy. So, be mindful of this.

The benefits of detection far outweigh the negatives. As such, most adventurers will seek to try and eat a corpse of floating eye as early as they can.